Background/Context: Over the past three decades, teacher turnover has increased substantially in U.S. public schools, especially in those serving large portions of low-income students of color. Teachers who choose to leave high-poverty schools serving large numbers of students of color usually transfer to schools serving wealthier, Whiter student…

We studied how six high-performing, high-poverty schools in one large Massachusetts city implemented the state's new teacher evaluation policy. The sample includes traditional, turnaround, restart, and charter schools, each of which had received the state's highest accountability rating. We sought to learn how these successful schools approached…

Background/Context: Many strategies to improve failing urban schools rest on efforts to improve leadership within the school. Effective school-based leadership depends not only on the activities of the principal, but also on teachers' efforts to address school-wide challenges. Research has shown that the principal is pivotal in such ventures,…